Tatsuya (佐口達也) Saguchi
Born : 1980 Cat. M45 Ultrarunner since 2017 JPN
33
DUV-index ?Largest integer N such that the runner has at least N credited races of at least N km.
55
DUV-index+ ?Largest integer N such that the race distances provide at least N complete segments of N km in total. A single long race may therefore contribute several segments. See the DUV-Index tab for the detailed calculation. calculation details
3
Countries visited ?FRAFranceJPNJapanTHAThailand
4,7%
Rank quotient ?This runner's calculation uses 33 eligible race(s): Σ(rank − 1) = 1 098; Σ finishers = 23 513. 1 098 / 23 513 × 100 = 4.67%. A win adds 0 to the numerator. Lower is better.

Totals

Ultras completed33
Km — ultra races3 853 km
> 100 km18
> 160 km14
Longest race175,0 km

Km per year (ultra races)

531
5 races
2022
570
5 races
2023
754
5 races
2024
747
5 races
2025
506
3 races
2026

Race types (share of distance)

Trail100,0%

Wins & podiums (ultra)

🏆 Win0
🏆 Win M0
🏅 Top 35
🏅 Top 3 M5
Longest winning streak0
Current streak0

HISTORY

33 race(s)
DateRacePerf.Rk
2026
28.08 174km FRA23ème Ultra Trail Tour du Mont Blanc 27:33:58 h204
26.06 165km JPN5th Deep Japan Ultra 100 - 165 km 30:30:11 h3 🥉
24.04 167km JPN11th Ultra-Trail Mt. Fuji 23:35:06 h22
2025
05.12 100mi THA2nd Chiangmai Thailand by UTMB - CHIANG DAO 100 25:19:49 h17
29.08 174km FRA22ème Ultra Trail Tour du Mont Blanc 31:31:56 h222
27.06 165km JPN4th Deep Japan Ultra 100 - 165 km 29:26:22 h3 🥉
25.04 167km JPN10th Ultra-Trail Mt. Fuji 22:39:48 h16
15.03 50mi JPN11th Mt. Hiei Int. 50 Mile Trail Run 10:47:50 h28
2024
06.12 175km THA1st Chiangmai Thailand by UTMB - TRANS-INT 160 30:49:27 h28
22.09 138km JPN10th SkyViewTrail Memorial Cup 21:51:40 h3 🥉
21.06 165km JPN3rd Deep Japan Ultra 100 - 165 km 27:50:23 h2 🥈
26.04 167km JPN9th Ultra-Trail Mt. Fuji 21:57:46 h10
23.03 109km JPN2nd Hiroshima Wangan Trail Run 16:02:17 h14
2023
10.12 70km JPN10th Izu Trail Journey 8:15:22 h50
18.11 106km JPN9th FunTrails100K Round 17:07:21 h13
23.06 165km JPN2nd Deep Japan Ultra 100 - 165 km 28:17:03 h2 🥈
28.05 62km JPN15th OSJ Okukuji Trail 60k 10:08:05 h6
21.04 167km JPN8th Ultra-Trail Mt. Fuji 23:50:07 h21
2022
11.12 70km JPN9th Izu Trail Journey 8:03:54 h52
09.10 71.5km JPN30th Hasetsune Cup - Japan Mountain Endurance Race 9:58:17 h51
17.09 162.6km JPN14th Shinetsu Five Mountains Trail 100 mile 25:51:36 h22
19.06 60km JPN8th Echigo Country Trail 7:13:35 h8
22.04 167km JPN7th Ultra-Trail Mt. Fuji 22:38:38 h28
2021
12.12 69.1km JPN8th Izu Trail Journey 8:21:33 h71
07.11 67km JPN5th Koshu Alps Haute Route Challenge 10:26:16 h17
23.07 65km JPN12th Nozawa Onsen 4100D Mountain Trail 7:33:05 h11
2019
08.12 71.7km JPN6th Izu Trail Journey 7:41:20 h51
21.09 143km JPN6th SkyView Ultra-Trail 140 - Yamada Noboru Memorial Cup 22:34:29 h16
13.07 100km JPN12th OSJ Ontake 100km Ultra Trail 10:19:21 h13
16.06 53km JPN5th Echigo Country Trail 5:49:04 h10
07.04 70km JPN5th Okumikawa Power Trail 8:43:14 h15
2018
17.06 53km JPN4th Echigo Country Trail 6:45:48 h26
2017
18.06 53km JPN3rd Echigo Country Trail 7:29:17 h76